129148401 has 16 divisors (see below), whose sum is σ = 176940288. Its totient is φ = 83740800.

The previous prime is 129148399. The next prime is 129148403. The reversal of 129148401 is 104841921.

It is an interprime number because it is at equal distance from previous prime (129148399) and next prime (129148403).

It is not a de Polignac number, because 129148401 - 2¹ = 129148399 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (129148403) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 43711 + ... + 46571.

It is an arithmetic number, because the mean of its divisors is an integer number (11058768).

Almost surely, 2^129148401 is an apocalyptic number.

It is an amenable number.

129148401 is a deficient number, since it is larger than the sum of its proper divisors (47791887).

129148401 is a wasteful number, since it uses less digits than its factorization.

129148401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3272.

The product of its (nonzero) digits is 2304, while the sum is 30.

The square root of 129148401 is about 11364.3478035477. The cubic root of 129148401 is about 505.4711167398.

The spelling of 129148401 in words is "one hundred twenty-nine million, one hundred forty-eight thousand, four hundred one".